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<div class="title">/data/users/hoss/faiss/IndexShards.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) Facebook, Inc. and its affiliates.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// -*- c++ -*-</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;IndexShards.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;FaissAssert.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &quot;Heap.h&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &quot;WorkerThread.h&quot;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">// subroutines</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">typedef</span> <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">Index::idx_t</a> idx_t;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// add translation to all valid labels</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="keywordtype">void</span> translate_labels (<span class="keywordtype">long</span> n, idx_t *labels, <span class="keywordtype">long</span> translation)</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;{</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordflow">if</span> (translation == 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;        <span class="keywordflow">if</span>(labels[i] &lt; 0) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;        labels[i] += translation;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    }</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;}</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">/** merge result tables from several shards.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"> * @param all_distances  size nshard * n * k</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> * @param all_labels     idem</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"> * @param translartions  label translations to apply, size nshard</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> IndexClass, <span class="keyword">class</span> C&gt;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;merge_tables(<span class="keywordtype">long</span> n, <span class="keywordtype">long</span> k, <span class="keywordtype">long</span> nshard,</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;             <span class="keyword">typename</span> IndexClass::distance_t *distances,</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;             idx_t *labels,</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;             <span class="keyword">const</span> std::vector&lt;typename IndexClass::distance_t&gt;&amp; all_distances,</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;             <span class="keyword">const</span> std::vector&lt;idx_t&gt;&amp; all_labels,</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;             <span class="keyword">const</span> std::vector&lt;long&gt;&amp; translations) {</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <span class="keywordflow">if</span> (k == 0) {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  }</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="keyword">using</span> distance_t = <span class="keyword">typename</span> IndexClass::distance_t;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <span class="keywordtype">long</span> stride = n * k;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="preprocessor">#pragma omp parallel</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor"></span>  {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    std::vector&lt;int&gt; buf (2 * nshard);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="keywordtype">int</span> * pointer = buf.data();</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordtype">int</span> * shard_ids = pointer + nshard;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    std::vector&lt;distance_t&gt; buf2 (nshard);</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    distance_t * heap_vals = buf2.data();</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">#pragma omp for</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor"></span>    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;      <span class="comment">// the heap maps values to the shard where they are</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;      <span class="comment">// produced.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;      <span class="keyword">const</span> distance_t *D_in = all_distances.data() + i * k;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;      <span class="keyword">const</span> idx_t *I_in = all_labels.data() + i * k;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;      <span class="keywordtype">int</span> heap_size = 0;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">long</span> s = 0; s &lt; nshard; s++) {</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        pointer[s] = 0;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="keywordflow">if</span> (I_in[stride * s] &gt;= 0) {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;          heap_push&lt;C&gt; (++heap_size, heap_vals, shard_ids,</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                        D_in[stride * s], s);</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        }</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;      }</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;      distance_t *D = distances + i * k;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;      idx_t *I = labels + i * k;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; k; j++) {</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="keywordflow">if</span> (heap_size == 0) {</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;          I[j] = -1;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;          D[j] = C::neutral();</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;          <span class="comment">// pop best element</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;          <span class="keywordtype">int</span> s = shard_ids[0];</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;          <span class="keywordtype">int</span> &amp; p = pointer[s];</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;          D[j] = heap_vals[0];</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;          I[j] = I_in[stride * s + p] + translations[s];</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;          heap_pop&lt;C&gt; (heap_size--, heap_vals, shard_ids);</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;          p++;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;          <span class="keywordflow">if</span> (p &lt; k &amp;&amp; I_in[stride * s + p] &gt;= 0) {</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;            heap_push&lt;C&gt; (++heap_size, heap_vals, shard_ids,</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;                          D_in[stride * s + p], s);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;          }</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        }</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;      }</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  }</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;} <span class="comment">// anonymous namespace</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#ac278d8f7d54923cb034127a4257c56b7">  110</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a2ffc0edbce1815fae55cae188b83a5cf">IndexShardsTemplate&lt;IndexT&gt;::IndexShardsTemplate</a>(idx_t d,</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;                                                 <span class="keywordtype">bool</span> threaded,</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                                                 <span class="keywordtype">bool</span> successive_ids)</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    : <a class="code" href="classfaiss_1_1ThreadedIndex.html">ThreadedIndex</a>&lt;IndexT&gt;(d, threaded),</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;      successive_ids(successive_ids) {</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;}</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a0596f5ca67d6c9bfddae1465c5353b29">  118</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a2ffc0edbce1815fae55cae188b83a5cf">IndexShardsTemplate&lt;IndexT&gt;::IndexShardsTemplate</a>(<span class="keywordtype">int</span> d,</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                                                 <span class="keywordtype">bool</span> threaded,</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                                                 <span class="keywordtype">bool</span> successive_ids)</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    : <a class="code" href="classfaiss_1_1ThreadedIndex.html">ThreadedIndex</a>&lt;IndexT&gt;(d, threaded),</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;      successive_ids(successive_ids) {</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;}</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a2ffc0edbce1815fae55cae188b83a5cf">  126</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a2ffc0edbce1815fae55cae188b83a5cf">IndexShardsTemplate&lt;IndexT&gt;::IndexShardsTemplate</a>(<span class="keywordtype">bool</span> threaded,</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;                                                 <span class="keywordtype">bool</span> successive_ids)</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    : <a class="code" href="classfaiss_1_1ThreadedIndex.html">ThreadedIndex</a>&lt;IndexT&gt;(threaded),</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;      successive_ids(successive_ids) {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;}</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a1d78dd47e9dc49488947e90dbc85e1ac">  134</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a1d78dd47e9dc49488947e90dbc85e1ac">IndexShardsTemplate&lt;IndexT&gt;::onAfterAddIndex</a>(IndexT* index <span class="comment">/* unused */</span>) {</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  sync_with_shard_indexes();</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;}</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a0488d95e9d45e0cfab203c83e3a8e3c1">  140</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a0488d95e9d45e0cfab203c83e3a8e3c1">IndexShardsTemplate&lt;IndexT&gt;::onAfterRemoveIndex</a>(IndexT* index <span class="comment">/* unused */</span>) {</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  sync_with_shard_indexes();</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;}</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html">IndexShardsTemplate&lt;IndexT&gt;::sync_with_shard_indexes</a>() {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;  <span class="keywordflow">if</span> (!this-&gt;count()) {</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    this-&gt;is_trained = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    this-&gt;ntotal = 0;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  }</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keyword">auto</span> firstIndex = this-&gt;at(0);</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  this-&gt;metric_type = firstIndex-&gt;metric_type;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  this-&gt;is_trained = firstIndex-&gt;is_trained;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  this-&gt;ntotal = firstIndex-&gt;ntotal;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; this-&gt;count(); ++i) {</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <span class="keyword">auto</span> index = this-&gt;at(i);</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    FAISS_THROW_IF_NOT(this-&gt;metric_type == index-&gt;<a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a>);</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    FAISS_THROW_IF_NOT(this-&gt;d == index-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>);</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    this-&gt;ntotal += index-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;  }</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;IndexShardsTemplate&lt;IndexT&gt;::train(idx_t n,</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                                   <span class="keyword">const</span> component_t *x) {</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;  <span class="keyword">auto</span> fn =</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    [n, x](<span class="keywordtype">int</span> no, IndexT *index) {</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        printf(<span class="stringliteral">&quot;begin train shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;      }</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;      index-&gt;<a class="code" href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">train</a>(n, x);</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        printf(<span class="stringliteral">&quot;end train shard %d\n&quot;</span>, no);</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;      }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    };</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;  this-&gt;runOnIndex(fn);</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  sync_with_shard_indexes();</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;}</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a45647579ff21e0945d8a87a97ec705fe">  191</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a45647579ff21e0945d8a87a97ec705fe">IndexShardsTemplate&lt;IndexT&gt;::add</a>(idx_t n,</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                                 <span class="keyword">const</span> component_t *x) {</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;  add_with_ids(n, x, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;}</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexShardsTemplate.html#a15e0b4a2fd85f9345537d215a331ed91">  198</a></span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html#a15e0b4a2fd85f9345537d215a331ed91">IndexShardsTemplate&lt;IndexT&gt;::add_with_ids</a>(idx_t n,</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                                          <span class="keyword">const</span> component_t * x,</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                                          <span class="keyword">const</span> idx_t *xids) {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  FAISS_THROW_IF_NOT_MSG(!(successive_ids &amp;&amp; xids),</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                         <span class="stringliteral">&quot;It makes no sense to pass in ids and &quot;</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                         <span class="stringliteral">&quot;request them to be shifted&quot;</span>);</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;  <span class="keywordflow">if</span> (successive_ids) {</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    FAISS_THROW_IF_NOT_MSG(!xids,</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                           <span class="stringliteral">&quot;It makes no sense to pass in ids and &quot;</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;                           <span class="stringliteral">&quot;request them to be shifted&quot;</span>);</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    FAISS_THROW_IF_NOT_MSG(this-&gt;ntotal == 0,</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                           <span class="stringliteral">&quot;when adding to IndexShards with sucessive_ids, &quot;</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;                           <span class="stringliteral">&quot;only add() in a single pass is supported&quot;</span>);</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  }</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;  idx_t nshard = this-&gt;count();</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  <span class="keyword">const</span> idx_t *ids = xids;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;  std::vector&lt;idx_t&gt; aids;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="keywordflow">if</span> (!ids &amp;&amp; !successive_ids) {</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    aids.resize(n);</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">for</span> (idx_t i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;      aids[i] = this-&gt;ntotal + i;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    }</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    ids = aids.data();</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;  }</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;  <span class="keywordtype">size_t</span> components_per_vec =</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keyword">sizeof</span>(component_t) == 1 ? (this-&gt;d + 7) / 8 : this-&gt;d;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;  <span class="keyword">auto</span> fn =</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    [n, ids, x, nshard, components_per_vec](<span class="keywordtype">int</span> no, IndexT *index) {</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;      idx_t i0 = (idx_t) no * n / nshard;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;      idx_t i1 = ((idx_t) no + 1) * n / nshard;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;      <span class="keyword">auto</span> x0 = x + i0 * components_per_vec;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        printf (<span class="stringliteral">&quot;begin add shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;      }</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;      <span class="keywordflow">if</span> (ids) {</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        index-&gt;<a class="code" href="structfaiss_1_1IndexIVF.html#a14e75169bddcd0251134821416b060a1">add_with_ids</a> (i1 - i0, x0, ids + i0);</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;      } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        index-&gt;<a class="code" href="structfaiss_1_1IndexIVF.html#a821002a9d3a1a74dc8d6f6072eca4075">add</a> (i1 - i0, x0);</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;      }</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;        printf (<span class="stringliteral">&quot;end add shard %d on %ld points\n&quot;</span>, no, i1 - i0);</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;      }</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    };</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;  this-&gt;runOnIndex(fn);</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;  <span class="comment">// This is safe to do here because the current thread controls execution in</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;  <span class="comment">// all threads, and nothing else is happening</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;  this-&gt;ntotal += n;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;}</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> IndexT&gt;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<a class="code" href="structfaiss_1_1IndexShardsTemplate.html">IndexShardsTemplate&lt;IndexT&gt;::search</a>(idx_t n,</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                                    <span class="keyword">const</span> component_t *x,</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;                                    idx_t k,</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                                    distance_t *distances,</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;                                    idx_t *labels)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;  <span class="keywordtype">long</span> nshard = this-&gt;count();</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;  std::vector&lt;distance_t&gt; all_distances(nshard * k * n);</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;  std::vector&lt;idx_t&gt; all_labels(nshard * k * n);</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;  <span class="keyword">auto</span> fn =</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    [n, k, x, &amp;all_distances, &amp;all_labels](<span class="keywordtype">int</span> no, <span class="keyword">const</span> IndexT *index) {</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;        printf (<span class="stringliteral">&quot;begin query shard %d on %ld points\n&quot;</span>, no, n);</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;      }</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;      index-&gt;<a class="code" href="structfaiss_1_1IndexIVF.html#ae2fd47b7d52603659e269aa8f6abb613">search</a> (n, x, k,</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;                     all_distances.data() + no * k * n,</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;                     all_labels.data() + no * k * n);</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;      <span class="keywordflow">if</span> (index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        printf (<span class="stringliteral">&quot;end query shard %d\n&quot;</span>, no);</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;      }</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    };</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;  this-&gt;runOnIndex(fn);</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  std::vector&lt;long&gt; translations(nshard, 0);</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;  <span class="comment">// Because we just called runOnIndex above, it is safe to access the sub-index</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;  <span class="comment">// ntotal here</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;  <span class="keywordflow">if</span> (successive_ids) {</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    translations[0] = 0;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0; s + 1 &lt; nshard; s++) {</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;      translations[s + 1] = translations[s] + this-&gt;at(s)-&gt;ntotal;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    }</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  }</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;  <span class="keywordflow">if</span> (this-&gt;metric_type == METRIC_L2) {</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    merge_tables&lt;IndexT, CMin&lt;distance_t, int&gt;&gt;(</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;      n, k, nshard, distances, labels,</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;      all_distances, all_labels, translations);</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    merge_tables&lt;IndexT, CMax&lt;distance_t, int&gt;&gt;(</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;      n, k, nshard, distances, labels,</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;      all_distances, all_labels, translations);</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;  }</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;}</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="comment">// explicit instanciations</span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="keyword">template</span> <span class="keyword">struct </span>IndexShardsTemplate&lt;Index&gt;;</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="keyword">template</span> <span class="keyword">struct </span>IndexShardsTemplate&lt;IndexBinary&gt;;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;} <span class="comment">// namespace faiss</span></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_ad3f0d3071f987baabbdd3da4500c87ea"><div class="ttname"><a href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a7a1d5eec194db0977b2318c6ed6a2b86"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">faiss::IndexIVF::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">Trains the quantizer and calls train_residual to train sub-quantizers. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00688">IndexIVF.cpp:688</a></div></div>
<div class="ttc" id="classfaiss_1_1ThreadedIndex_html"><div class="ttname"><a href="classfaiss_1_1ThreadedIndex.html">faiss::ThreadedIndex</a></div><div class="ttdef"><b>Definition:</b> <a href="ThreadedIndex_8h_source.html#l00021">ThreadedIndex.h:21</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html_a15e0b4a2fd85f9345537d215a331ed91"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html#a15e0b4a2fd85f9345537d215a331ed91">faiss::IndexShardsTemplate::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const component_t *x, const idx_t *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8cpp_source.html#l00198">IndexShards.cpp:198</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a14e75169bddcd0251134821416b060a1"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a14e75169bddcd0251134821416b060a1">faiss::IndexIVF::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const idx_t *xids) override</div><div class="ttdoc">default implementation that calls encode_vectors </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00149">IndexIVF.cpp:149</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00067">Index.h:67</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00068">Index.h:68</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html_a2ffc0edbce1815fae55cae188b83a5cf"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html#a2ffc0edbce1815fae55cae188b83a5cf">faiss::IndexShardsTemplate::IndexShardsTemplate</a></div><div class="ttdeci">IndexShardsTemplate(bool threaded=false, bool successive_ids=true)</div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8cpp_source.html#l00126">IndexShards.cpp:126</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html">faiss::IndexShardsTemplate</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8h_source.html#l00020">IndexShards.h:20</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html_a45647579ff21e0945d8a87a97ec705fe"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html#a45647579ff21e0945d8a87a97ec705fe">faiss::IndexShardsTemplate::add</a></div><div class="ttdeci">void add(idx_t n, const component_t *x) override</div><div class="ttdoc">supported only for sub-indices that implement add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8cpp_source.html#l00191">IndexShards.cpp:191</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html_a1d78dd47e9dc49488947e90dbc85e1ac"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html#a1d78dd47e9dc49488947e90dbc85e1ac">faiss::IndexShardsTemplate::onAfterAddIndex</a></div><div class="ttdeci">void onAfterAddIndex(IndexT *index) override</div><div class="ttdoc">Called just after an index is added. </div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8cpp_source.html#l00134">IndexShards.cpp:134</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e"><div class="ttname"><a href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">faiss::Index::metric_type</a></div><div class="ttdeci">MetricType metric_type</div><div class="ttdoc">type of metric this index uses for search </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00074">Index.h:74</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a821002a9d3a1a74dc8d6f6072eca4075"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a821002a9d3a1a74dc8d6f6072eca4075">faiss::IndexIVF::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">Calls add_with_ids with NULL ids. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00143">IndexIVF.cpp:143</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_ae2fd47b7d52603659e269aa8f6abb613"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#ae2fd47b7d52603659e269aa8f6abb613">faiss::IndexIVF::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00228">IndexIVF.cpp:228</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShardsTemplate_html_a0488d95e9d45e0cfab203c83e3a8e3c1"><div class="ttname"><a href="structfaiss_1_1IndexShardsTemplate.html#a0488d95e9d45e0cfab203c83e3a8e3c1">faiss::IndexShardsTemplate::onAfterRemoveIndex</a></div><div class="ttdeci">void onAfterRemoveIndex(IndexT *index) override</div><div class="ttdoc">Called just after an index is removed. </div><div class="ttdef"><b>Definition:</b> <a href="IndexShards_8cpp_source.html#l00140">IndexShards.cpp:140</a></div></div>
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